body {
  background-color: black;
  /* position:fixed; */
}

.circle {
    border-radius: 50%;
    display: inline-block;
    position: relative;
}
.circle img {
    border-radius: 50%;
    display: block;
    border:1px solid #000;
    height: 100%;
    width: 100%;
}
/* .circle:after {
    content: "";
    display: block;
    width: 100%;
    height: 100%;
    background: radial-gradient(ellipse at center, rgba(0,0,0,0) 0%,rgba(0,0,0,1) 70%,rgba(0,0,0,0) 100%);
    border-radius: 100%;
    position: absolute;
    top: 0; left: 0;
} */

.center {
  /* padding-top: 30%; */
  align-items: center;
}

h1 {
  color: white;
  font-size: 50px;
}

@media (max-width: 767px) {
  .center-cell{
    padding-top: 22%
  }
}